JPH04180026A - Liquid crystal element - Google Patents
Liquid crystal elementInfo
- Publication number
- JPH04180026A JPH04180026A JP31077590A JP31077590A JPH04180026A JP H04180026 A JPH04180026 A JP H04180026A JP 31077590 A JP31077590 A JP 31077590A JP 31077590 A JP31077590 A JP 31077590A JP H04180026 A JPH04180026 A JP H04180026A
- Authority
- JP
- Japan
- Prior art keywords
- liquid crystal
- crystal layer
- thickness
- spacers
- crystal element
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 71
- 125000006850 spacer group Chemical group 0.000 claims abstract description 27
- 239000000758 substrate Substances 0.000 claims description 6
- 239000012508 resin bead Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 description 6
- 239000011521 glass Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 239000005262 ferroelectric liquid crystals (FLCs) Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、映像機器や情報機器などに用いて有効な液晶
素子に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a liquid crystal element useful for use in video equipment, information equipment, and the like.
従来の技術
近年、液晶素子は、コンピュータを中心とする情報機器
分野及びテレビジョンなどを中心とする映像機器分野に
おいて、プリンターなどに用いる薄型の光ンヤンタや大
画面で薄型の表示装置として実用化されつつある。Background of the Invention In recent years, liquid crystal elements have been put to practical use in the field of information equipment, mainly computers, and in the field of video equipment, mainly televisions, as thin optical devices used in printers and large-screen, thin display devices. It's coming.
以下図面を参照しながら、上述した従来の液晶素子の一
例について説明する。An example of the above-mentioned conventional liquid crystal element will be described below with reference to the drawings.
第３図は従来の液晶素子の断面図を示すものである。第
３図において、１．２は偏光板である。FIG. 3 shows a cross-sectional view of a conventional liquid crystal element. In FIG. 3, 1.2 is a polarizing plate.
３．４は硝子基板である。５，６はＩＴＯ膜からなる矩
形状の透明な導電電極である。７．８はＴｉｅＸ−３ｉ
ｎＸからなる絶縁膜である。９゜１０は配向膜である。3.4 is a glass substrate. 5 and 6 are rectangular transparent conductive electrodes made of ITO film. 7.8 is TieX-3i
This is an insulating film made of nX. 9°10 is an alignment film.
１１は液晶層である。１２は液晶層にばらまいたスペー
サーである。８はシールである。９はシール樹脂に混入
したスペーサーである。11 is a liquid crystal layer. 12 are spacers scattered in the liquid crystal layer. 8 is a seal. 9 is a spacer mixed into the sealing resin.
以上のように構成された液晶素子において、液晶層内を
負圧とし、液晶層の厚みｄＬＣをばらまかれたスペーサ
ーの径の平均ｄｓＰと同し程度にして、均−な液晶層の
厚みａｔＣを得ている。In the liquid crystal element constructed as described above, the pressure inside the liquid crystal layer is set to negative, the thickness dLC of the liquid crystal layer is made to be approximately the same as the average diameter dsP of the scattered spacers, and a uniform thickness atC of the liquid crystal layer is obtained. It has gained.
発明が解決しようとする課題
しかしながら上記のような構成では、スペーサーのばら
まき密度により液晶層の厚みが変化するので、均一な液
晶層の厚みｄＬＣを得ることが難しいという問題点を有
していた。Problems to be Solved by the Invention However, the above configuration has a problem in that it is difficult to obtain a uniform liquid crystal layer thickness dLC because the thickness of the liquid crystal layer changes depending on the scattering density of the spacers.
本発明は上記問題点に鑑み、より均一な液晶層の厚みを
持つ液晶素子を提供するものである。In view of the above problems, the present invention provides a liquid crystal element having a more uniform liquid crystal layer thickness.
課題を解決するための手段
上記問題点を解決するために本発明の液晶素子は、液晶
層を一定厚みにするため液晶層内にばらまくスペーサー
の径の最大値と標準偏差をそれぞれｄ ！ｉＰＭ□、σ
８．としたとき、液晶層の厚みｄｔゎを
ｄ ＳＰＭＡＸ ３ σ、Ｐ≦ｄＬＣ≦ｄ ５
ＰＩＩＡＸとした構成を備えたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the liquid crystal element of the present invention has a configuration in which the maximum value and the standard deviation of the diameters of the spacers scattered in the liquid crystal layer in order to make the liquid crystal layer have a constant thickness are d! iPM□,σ
8. Then, the thickness dtゎ of the liquid crystal layer is d SPMAX 3 σ, P≦dLC≦d 5
It has a PIIAX configuration.
作用
液晶層の厚みは、基板とスペーサーと液晶との力の釣り
合いによって決定されているが、本発明は上記した構成
によって、スペーサーのうちで液晶層厚より大きい径を
しているため基板によりつふされているスペーサーの数
は少なくなり、液晶層の厚みのスペーサーから受ける力
の影響が小さくなり、スペーサーのばらまき密度による
液晶層の厚みの変化が小さくなるため、均一な液晶層の
厚みを得ることとなる。The thickness of the working liquid crystal layer is determined by the balance of forces between the substrate, the spacer, and the liquid crystal, but in the present invention, with the above-described structure, the thickness of the spacer is larger than the thickness of the liquid crystal layer. The number of closed spacers is reduced, the influence of the force exerted by the spacers on the thickness of the liquid crystal layer is reduced, and the change in the thickness of the liquid crystal layer due to the density of spacers is reduced, resulting in a uniform liquid crystal layer thickness. It happens.
実施例
以下本発明の実施例の液晶素子について、図面を参照し
ながら説明する。第１図は本発明の実施例における液晶
素子の断面図を示すものである。EXAMPLES Hereinafter, liquid crystal devices according to examples of the present invention will be described with reference to the drawings. FIG. 1 shows a cross-sectional view of a liquid crystal element in an embodiment of the present invention.
第１図において、１．２は偏光板である。３，４は硝子
基板である。５．６はＩＴＯ膜からなる矩形状の透明な
導電電極で１５００オングストロームの厚みを有する。In FIG. 1, 1.2 is a polarizing plate. 3 and 4 are glass substrates. 5.6 is a rectangular transparent conductive electrode made of ITO film and has a thickness of 1500 angstroms.
７． ８はＴｉＯオ ・５ｉＯＸからなる絶縁膜で１
０００オングストロームの厚みを有する。９．１０は配
向膜で、窒素蛛製配向膜材料ＰＳＩ−Ａ２３０１をそれ
ぞれ、スピンナーで塗布し、熱重合させ、液晶分子の交
差角が２５０” となるよう通常のラビング処理をした
。7. 8 is an insulating film made of TiO2 and 5iOX, and 1
It has a thickness of 1,000 angstroms. 9.10 is an alignment film, and alignment film material PSI-A2301 manufactured by Nitrogen Co., Ltd. was applied using a spinner, thermally polymerized, and subjected to a normal rubbing treatment so that the intersection angle of liquid crystal molecules was 250''.
１１は液晶層である。１２は液晶層にばらまいたスペー
サーで、最大粒子径８．５ＣＨｔｍ標準偏差０．３４μ
ｍの樹脂ビーズを使用した。ばらまき密度は１００個／
ｆｆｌｆｆ１２から２００個／ｆｆＬｆｆ１２程度であ
る。11 is a liquid crystal layer. 12 is a spacer scattered in the liquid crystal layer, maximum particle size 8.5CHtm standard deviation 0.34μ
m resin beads were used. The scattering density is 100 pieces/
It is about 200 pieces/ffLff12 from fflff12.
１３はシールで、エポキシ樹脂を用いた。１４はシール
樹脂に混入したスペーサーで、表示部とシール部の段差
を考慮して平均径８．５μｍの硝子ファイバーを使用し
た。13 is a seal made of epoxy resin. 14 is a spacer mixed in the sealing resin, and glass fibers having an average diameter of 8.5 μm were used in consideration of the difference in level between the display part and the sealing part.
上記のような構成でパネルを作り、液晶組成物Ａを真空
注入により充填し液晶層の厚みが８．２μｍになるよう
に封口した。上記液晶素子を観察すると、従来の８．２
５μｍの平均粒子径をもつスペーサーをばらまいて液晶
層の厚みを８．２μｍとしたものと比べて、液晶層の厚
みのむらに起因する表示むらが改善され、表示の均一性
は迩かに向上した。A panel was made with the above configuration, filled with liquid crystal composition A by vacuum injection, and sealed so that the thickness of the liquid crystal layer was 8.2 μm. When observing the above liquid crystal element, it is found that the conventional 8.2
Compared to the case where the thickness of the liquid crystal layer was made 8.2 μm by scattering spacers with an average particle diameter of 5 μm, display unevenness caused by uneven thickness of the liquid crystal layer was improved, and display uniformity was significantly improved. .
上記液晶層の厚みむらは、ばらまき密度のむらによる。The thickness unevenness of the liquid crystal layer is due to unevenness in the scattering density.
そこで、第２図にばらつき密度とある一定内圧にある液
晶層の厚みとのグラフを示す。従来の平均粒径８．２５
μｍをばらまいた液晶素子は内圧０．７ｋｇ／ｃｆｆｌ
で、本発明による構成による液晶素子は内圧５０ｇ／ｃ
ｎで測定した。第２図から、本発明による構成のほうが
スペーサーのばらまき密度による液晶層の厚みの変化が
小さいことが分かる。このことから、本発明による構成
の液晶素子は、従来のものより、液晶層の厚みのむらに
起因する表示むらが改善され、表示の均一性は這かに向
上した。Therefore, FIG. 2 shows a graph of the variation density and the thickness of the liquid crystal layer at a certain constant internal pressure. Conventional average particle size 8.25
The internal pressure of the liquid crystal element with micrometer scattering is 0.7kg/cffl.
The liquid crystal element constructed according to the present invention has an internal pressure of 50 g/c.
Measured at n. From FIG. 2, it can be seen that the structure according to the present invention has a smaller change in the thickness of the liquid crystal layer due to the scattering density of the spacers. From this, the liquid crystal element having the structure according to the present invention has improved display unevenness caused by unevenness in the thickness of the liquid crystal layer, and has a slightly improved display uniformity, compared to the conventional liquid crystal element.
又上記のような構成で、ばらまくスペーサーの標準偏差
を０．３４μｍで一定にして最大粒径を変化させたとこ
ろ、
ｄ ＳＰＭＡＸ ３σ３．≦ｄＬＣ≦ｄ ５ＰＨＡＸ
とした範囲で表示むらが改善され表示の均一性が向上し
た。ここで、ｄ ＳＰＭ□はばらまいたスペーサーの最
大粒径で、σ、Ｐはばらまいたスペーサーの粒径の標準
偏差で、ｄＬＣは液晶素子の液晶層の厚みである。In addition, with the above configuration, when the standard deviation of the scattered spacers was kept constant at 0.34 μm and the maximum particle size was varied, d SPMAX 3σ3. ≦dLC≦d 5PHAX
Within this range, display unevenness was improved and display uniformity improved. Here, d SPM□ is the maximum particle size of the scattered spacers, σ and P are the standard deviations of the particle sizes of the scattered spacers, and dLC is the thickness of the liquid crystal layer of the liquid crystal element.
以上の例は、スーパーライステノド不マチ、り液晶素子
の例を示したが、強誘電性液晶素子や、その他の液晶素
子においてもこの方法で表示むらが改善された。Although the above example shows an example of a liquid crystal element with a super-light pattern, the display unevenness can also be improved by this method in ferroelectric liquid crystal elements and other liquid crystal elements.
また、ばらまくスペーサーの種類を変えて調べたところ
、最も樹脂ビーズが効果あることが分かった。We also investigated different types of spacers and found that resin beads were the most effective.
発明の効果
以上のように本発明は、液晶層内にばらまくスペーサー
の径の最大値と標準偏差をそれぞれｄ ＳＰＭＡＸ 、
σ３．としたとき、液晶層の厚みｄＬＣをｄ ＳＰ
ＭＡＸ ３σ３．≦ａｔＣ≦ｄ ＳＰＭ□としたこ
とにより、厚みむらによる表示むらのない均一な液晶素
子を得ることができる。Effects of the Invention As described above, the present invention allows the maximum value and standard deviation of the diameters of the spacers scattered within the liquid crystal layer to be d SPMAX ,
σ3. Then, the thickness dLC of the liquid crystal layer is d SP
MAX 3σ3. By setting ≦atC≦d SPM□, a uniform liquid crystal element without display unevenness due to thickness unevenness can be obtained.
第１図は本発明の実施例によって得られる液晶素子の概
略断面図、第２図はばらつき密度とある一定内圧にある
液晶層の厚みとのグラフ、第３図は従来の液晶素子の概
略断面図である。
１．２・・・・・・偏光板、３，４・・・・・・硝子基
板、５゜６・・・・・・ＩＴｏ膜からなる矩形状の透明
な導電電極、７．８・・・・・・絶縁膜、９．１０・・
・・・・配向膜、１１・・・・・・液晶層、１２・・・
・・・液晶層にばらまいたスペーサー、１３・・・・・
・シール、１４・・・・・・シール樹脂に混入したスペ
ーサー。
代理人の氏名 弁理士小鍜治明 はが２名７トーμｔ４
１
９、＋ｏ−Ｊｌｌ；Ｉ賎
Ｕ −：狼晶ｌ
＋２−一一耐１＋ｌ：＋ｌ）Ｌ＋＋＋：ズイ°亨−１３
−−−ソール
１４−−−ツル猪「真ｉｉ１：ンＬ入しＬ−７へ１１寸
−第 ２ 図Fig. 1 is a schematic cross-sectional view of a liquid crystal element obtained by an embodiment of the present invention, Fig. 2 is a graph of variation density and thickness of a liquid crystal layer at a certain constant internal pressure, and Fig. 3 is a schematic cross-sectional view of a conventional liquid crystal element. It is a diagram. 1.2... Polarizing plate, 3,4... Glass substrate, 5゜6... Rectangular transparent conductive electrode made of ITo film, 7.8... ...Insulating film, 9.10...
...Alignment film, 11...Liquid crystal layer, 12...
...Spacers scattered on the liquid crystal layer, 13...
・Seal, 14...Spacer mixed in seal resin. Name of agent: Patent attorney Haruaki Ogata, 2 people, 7 μt4
1 9, +o-Jll; I-Jll;
--- Sole 14 --- Crane boar "True II 1: N L into L-7 11 inches - Fig. 2
Claims (2)
なくとも一枚は透明である複数の基板と、前記液晶層に
電圧印加が行えるように前記基板に付設した電圧印加手
段とを具備したパネルにおいて、液晶層を一定厚みにす
るため液晶層内にばらまくスペーサーの径の最大値と標
準偏差をそれぞれｄ＿Ｓ＿Ｐ＿Ｍ＿Ａ＿Ｘ、σ＿Ｓ＿Ｐ
としたとき、液晶層の厚みｄ＿Ｌ＿Ｃを ｄ＿Ｓ＿Ｐ＿Ｍ＿Ａ＿Ｘ−３σ＿Ｓ＿Ｐ≦ｄ＿Ｌ＿Ｃ≦
ｄ＿Ｓ＿Ｐ＿Ｍ＿Ａ＿Ｘとしたことを特徴とする液晶素
子。(1) A liquid crystal layer and a plurality of substrates, at least one of which is transparent, arranged to sandwich the liquid crystal layer, and a voltage application means attached to the substrate so as to apply a voltage to the liquid crystal layer. In the panel, the maximum value and standard deviation of the diameter of spacers scattered within the liquid crystal layer to maintain a constant thickness of the liquid crystal layer are d_S_P_M_A_X and σ_S_P, respectively.
When, the thickness d_L_C of the liquid crystal layer is d_S_P_M_A_X−3σ_S_P≦d_L_C≦
A liquid crystal element characterized in that it is d_S_P_M_A_X.
請求項（１）記載の液晶素子。(2) The liquid crystal element according to claim (1), wherein the spacer is a resin bead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31077590A JPH04180026A (en) | 1990-11-15 | 1990-11-15 | Liquid crystal element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP31077590A JPH04180026A (en) | 1990-11-15 | 1990-11-15 | Liquid crystal element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04180026A true JPH04180026A (en) | 1992-06-26 |
Family
ID=18009324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP31077590A Pending JPH04180026A (en) | 1990-11-15 | 1990-11-15 | Liquid crystal element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04180026A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6486936B1 (en) | 1999-05-25 | 2002-11-26 | Nec Corporation | Liquid crystal panel with seal containing hard and soft spacers |
-
1990
- 1990-11-15 JP JP31077590A patent/JPH04180026A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6486936B1 (en) | 1999-05-25 | 2002-11-26 | Nec Corporation | Liquid crystal panel with seal containing hard and soft spacers |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5142395A (en) | Liquid crystal display with spacers of specific densities which are adhesive and elastic | |
| JP3132193B2 (en) | Liquid crystal display device and method of manufacturing liquid crystal display device | |
| JP2000250045A (en) | Liquid crystal display device and its production | |
| JP3441383B2 (en) | Liquid crystal display device and manufacturing method thereof | |
| JPH04180026A (en) | Liquid crystal element | |
| JPH02157825A (en) | Electrooptical device made by using ferroelectric liquid crystal | |
| JPH01113729A (en) | Liquid crystal electro-optic device | |
| JPH04180025A (en) | Liquid crystal element | |
| JPS6278530A (en) | Liquid crystal display unit | |
| JP3131508B2 (en) | Liquid crystal display | |
| JPH0378728A (en) | Production of liquid crystal panel | |
| JPH06273743A (en) | Color liquid crystal electrooptic device | |
| JPH02201424A (en) | Production of liquid crystal display device | |
| JPH06110063A (en) | Color liquid crystal optical device and its production | |
| JPH05232476A (en) | Liquid crystal display element | |
| JP2799022B2 (en) | Liquid crystal display device | |
| JPH0854633A (en) | Liquid crystal display device | |
| JPS61186930A (en) | Liquid crystal display element | |
| JPH02139518A (en) | Production of liquid crystal panel | |
| JP2000310782A (en) | Liquid crystal display device | |
| JP3155121B2 (en) | Liquid crystal device manufacturing method | |
| JPH03197928A (en) | Liquid crystal display device | |
| JPH06230349A (en) | Color liquid crystal display element | |
| JPH01142530A (en) | Liquid crystal device | |
| JPS63155128A (en) | Liquid crystal display device |